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This species is accepted, and its native range is Thailand.

[KBu]

Suwanphakdee C et al. 2017. New species and a reinstatement in Peperomia (Piperaceae) from Thailand. Kew Bulletin 72:1. DOI 10.1007/S12225-016-9662-5

Conservation
This species is uncommon in the wild and restricted in the protected area (Huai Yang Waterfall National Park, Prachuap Kiri Khan province). The populations are very small and restricted in distribution. We propose that this new species has a provisional rating of Vulnerable (VU) and category of D2 according to IUCN (2011) criteria.
Distribution
Endemic to south western Thailand (Prachuap Khiri Khan province).
Ecology
This species grows on rock ledges or is epiphytic in shaded areas on mountain summit at 1250 m above sea level.
Morphology General Habit
Perennial herbs 15 - 20 cm high, erect, epiphytic or epilithic; stems forming a clump, 2 - 3 main stems with 4 - 6 branchlets; stolons absent, not rooting at basal nodes; internodes 3.5 - 4cmlong,fleshy, hirsute, slightly and denselyhispidandvelutinous on terminal.Leaves(5 -)7- verticillate; petiole c. 5 mm long, slightly to densely strigose; lamina chartaceous when dry, ovate or ovate- elliptic, slightly or densely strigose on both surfaces, denser on lower surface, 1.5 - 4x 1- 2 cm, asymmetrical, base cuneate, apex rounded, obtuse rarely acute, margin undulate, leaf3 (- 5)-palminerved
Morphology Reproductive morphology Flowers
Flower with orbicular floral bract, c. 1 mm diam., covering the basal part of ovary
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens: filament 0.1 – 0.2 mm long; anthers 0.2 - 0.3 mm long, slightly exserted at anthesis, transversely dehiscent
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary ovoid; style short; stigma glabrous
Morphology Reproductive morphology Fruits
Fruit without pseudopedicel, immersed within rachial pit, narrowly ovoid, 0.5 - 1 mm, with stylar tip and without papillae
Morphology Reproductive morphology Inflorescences
Inflorescence with 3 - 7 spikes per shoot, terminal or in the axils of the upper leaves, 2 - 4 x 0.1 - 0.2 cm, erect, green or greenish- yellow, cylindrical; rachis glabrous with dense or sparse flowers; peduncle 0.5 - 1 cm long, slightly to densely strigose
Note
Peperomia heptaphylla is distinctively 5 - 7- verticillate (sometimes caducous into 6). All parts are hirsute or hispid, slightly to densely hispid or velutinous, except for the rachis of the inflorescence. This species has the highest number of inflorescences per shoot of Peperomia in Thailand. The differences in characters between P. heptaphylla and P. dindygulensis are shown in Table 1. The specific epithet refers to the number of leaves per node. Peperomia heptaphylla is most similar to P.      dindygulensis Miq. but can be distinguished by epiphytic or epilithic vs only epilithic habit; stem green vs red or reddish; hirsute or slightly to densely hispid and velutinous on terminal shoot vs velutinous rarely scabrous or puberulous; stolons absent vs present; leaf slightly to densely strigose vs pilose; 5 - 7-verticillate vs opposite decussate or 4- verticillate on terminal shoot; 3 - 7spikesper shoot vs 2 - 4 spikes/shoot; fruit narrowly ovoid vs ±globose; sessile vs pseudopedicellate; papillae with­out glandular trichome vs with sticky glandular trichome.
Phenology
Flowering and fruiting occur in April and May.
Vernacular
Bia Pra Chuap.

Native to:

Thailand

Peperomia heptaphylla Suwanph. & Hodk. appears in other Kew resources:

First published in Kew Bull. 72(1)-1: 2 (2016)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

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Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0